Azure Analysis Services connection issue

Hi,

my client want to consult with me his report in Power BI. For this case he created new user in his AzureAD and gave me credentials. 

I am able to connect to PowerBI service and explore published reports. Reports are connected in Live Connection mode into Azure Analysis Services.

The problem starts when I download pbix file from serivce and try to open file with PowerBI desktop app,  I got this error : 

I can connect to model with Excel and see data, this user is in roles for RLS security. 

My powerbi desktop app is from January 2018 version. 

Any idea ?